Inventory a PDF before reading it: page count, per-page size (mm), and — the part that matters — which pages carry a text layer and which are scans/drawings. Use it to decide between pdf_extract_text (text layer), ocr_pdf (scans), and pdf_pages_to_images (look at drawings). Reads the file on this machine; nothing leaves it.

Extract the text layer of a page range (1-based: "3", "1-5", "2,4,9-11"; up to 50 pages per call). Page-ranged so a 400-page standard is read in slices instead of one blind gulp. Returns nothing useful for scanned pages — pdf_info names those, ocr_pdf reads them. Bounded; truncation is marked.

Render PDF pages to PNG/JPEG files (up to 20 pages per call, dpi 30–400) in out_dir — default derived/ beside the source, never on top of it (charter). The rendered pages are ordinary images: open them in the workspace, or read them with fs.read to LOOK at a drawing-heavy page the text extractor can't serve.

OCR scanned PDF pages (up to 10 per call): renders each page and runs the LOCAL tesseract binary — needs tesseract installed (brew install tesseract) and refuses by name without it; nothing reaches the network. Use pdf_info first to find which pages need OCR. OCR misreads numbers — verify critical values against the rendered page.

Extract a DOCX in document order with structure kept: headings as markdown levels, paragraphs, and tables as markdown tables — so you can cite the table under a section instead of fishing in text soup. Bounded; truncation is marked.

Extract a PPTX slide by slide: title, body text, tables, and speaker notes (quoted, marked as notes). Bounded; truncation is marked.

OCR one image (png/jpg/gif/webp/bmp/tiff) with the LOCAL tesseract binary — needs tesseract installed and refuses by name without it; nothing reaches the network. OCR misreads numbers — verify critical values by looking at the image itself.

Convert/resize/rotate an image into a NEW file — format by out_path suffix (png/jpg/webp/gif/bmp/tiff), optional max_dim bound on the long edge, rotation in 90° steps. Refuses an out_path that collides with the input (charter).

Crop a pixel box (x, y, width, height from the top-left) into a NEW file — e.g. isolate one view of a drawing before OCR or a close look. Refuses a box that leaves the image and an out_path that collides with the input (charter).

Draw labelled rectangles on a copy of an image (up to 50 marks, each {x, y, w, h, label?}) — point at regions of a drawing or screenshot when words alone are ambiguous. Writes a NEW file; refuses an out_path that collides with the input (charter).

List a zip/tar archive's entries (name, size, kind) plus the total uncompressed size — look before extracting. Bounded at 1000 entries; truncation is marked.

Extract an archive (or just members) into out_dir — default derived/<name>/ beside it, and NEVER anywhere else: absolute paths, .. members, and links are refused by name (zip-slip), entry count and total size are capped so a zip bomb is an error, not an outage.